WatchGas SST1 Serviceable NH3 Gas Detector SST1-A
Description
Ammonia is pungent enough to smell at 5 ppm — and by the time you can't smell it anymore, you're above OSHA's exposure limit.
Anyone who works around ammonia — refrigeration compressor rooms, poultry houses, fertilizer operations, industrial cleaning, chemical facilities — knows the paradox: at low concentrations it's obvious, and at dangerous concentrations olfactory fatigue kicks in fast. Workers stop noticing what they're breathing.
The WatchGas SST1-A Serviceable NH3 Gas Detector gives you a number instead of a nose.
It reads ammonia continuously in ppm — across OSHA's 8-hour PEL of 50 ppm and NIOSH's stricter 25 ppm REL — with configurable low, high, TWA, and STEL alarms. When ammonia hits the alarm threshold, the SST1-A vibrates, buzzes, and flashes. Single-button operation means a worker in gloves and PPE can silence, snooze, or acknowledge without taking gear off.
Why refrigeration safety managers, poultry producers, and chemical facility operators pick the SST1 line:
- Continuous NH3 monitoring with configurable alarm setpoints for low, high, TWA, and STEL
- Serviceable sensor — replace the NH3 cell instead of the whole unit at end-of-life
- 3-year warranty (vs. the industry-typical 2 years) on the SST1 platform
- Vibration + audible + visual alarms — you notice it in a compressor room
- Bump test and calibration compatible with the
WatchGas SST-DOCK for fleet management
- Datalogging for compliance audits — IIAR, OSHA PSM (29 CFR 1910.119), and internal safety programs
PK Safety services the full WatchGas SST line with factory-trained technicians in-house. We also handle BW/Honeywell (Factory Authorized), RKI, and RAE Systems monitors — one shop for a mixed fleet. If the NH3 sensor drifts or needs replacement, send the unit to us — you're not shipping equipment into a black box. Call us at
800.829.9580 to talk through the SST1 setup with someone who actually understands ammonia detection and the WatchGas SST platform.
This is right for you if:
- You work around refrigeration ammonia (cold storage, food processing, grocery distribution centers)
- You're in ammonia-intensive agriculture (poultry, dairy, anhydrous fertilizer distribution)
- You need audit-ready NH3 exposure logs for IIAR or OSHA PSM compliance
- You've had a worker report headaches, or eye/throat irritation, and want to quantify what they're breathing
Technical documents:
Brochure
Specification Sheet
Quick Start Guide
Part Number: WG01-SST1-A — SST1-A Serviceable NH3 (Ammonia) Gas Detector
Frequently Asked Questions
What is the OSHA exposure limit for ammonia?
OSHA's permissible exposure limit (PEL) for ammonia is 50 ppm as an 8-hour time-weighted average, under 29 CFR 1910.1000 Table Z-1. NIOSH's recommended exposure limit (REL) is more conservative at 25 ppm TWA plus a 35 ppm short-term exposure limit (STEL) over any 15-minute period. Many facilities set internal exposure targets to the NIOSH level rather than the OSHA PEL.
The SST1-A has configurable alarm setpoints for low, high, TWA, and STEL — set to match your facility's exposure program (OSHA, NIOSH, ACGIH, or a stricter internal standard).
Where is ammonia detection required or recommended?
Ammonia detection is a compliance or best-practice requirement in several settings: industrial refrigeration systems containing more than 10,000 pounds of ammonia (OSHA's Process Safety Management standard, 29 CFR 1910.119); refrigeration systems covered by the IIAR (International Institute of Ammonia Refrigeration) standards; agricultural operations handling anhydrous ammonia; and any workplace where ammonia is used or stored that falls under OSHA's respiratory protection standard (29 CFR 1910.134).
Common industries that rely on the SST1-A: cold storage and food processing (refrigeration compressor rooms), poultry and dairy farming (ambient NH3 in barns), fertilizer distribution and application (anhydrous ammonia), industrial cleaning, and chemical manufacturing.
Why can't I just rely on smell to detect ammonia?
Ammonia has a very distinctive pungent smell at low concentrations — most people can detect NH3 easily at 5 ppm. But at higher concentrations, olfactory fatigue sets in fast: the sensory nerves become desensitized within minutes, and workers can no longer reliably tell whether concentrations are rising or falling. Olfactory fatigue is well-documented for NH3 and is a major reason continuous instrument monitoring is required in ammonia-intensive facilities.
A continuous readout in ppm from the SST1-A shows the actual concentration regardless of nose adaptation.
What does "serviceable" mean on the SST1-A?
Traditional single-gas monitors are single-use — when the sensor reaches end-of-life (typically 2–3 years), the whole unit gets replaced. The SST1 platform is designed to be serviced: the NH3 sensor cell can be replaced, extending the monitor's service life beyond the sensor's own lifespan. PK Safety services the WatchGas SST line in-house — send the unit in when the sensor needs replacement.
Does the SST1-A work with the WatchGas SST-DOCK docking station?
Yes. The SST1-A is fully compatible with the
WatchGas SST-DOCK Touchscreen docking station for bump testing, calibration, and datalogging. If you're running a fleet of SST1 monitors, the SST-DOCK automates the compliance workflow — bump test plus calibration in about 60 seconds per unit, with automatic timestamped logs suitable for IIAR and OSHA PSM audits.
How does PK Safety support the SST1-A after purchase?
PK Safety carries the full WatchGas SST line and services the SST1-A with factory-trained technicians in-house. That includes sensor replacement, calibration, firmware updates, and warranty support. Call
800.829.9580 to talk through your NH3 monitoring setup with someone who knows the SST1 platform — not a call-center script.
Not sure this is the right fit? Call PK Safety at 800.829.9580. A person who knows ammonia monitoring and the WatchGas SST platform will pick up.
Read more
Description
Ammonia is pungent enough to smell at 5 ppm — and by the time you can't smell it anymore, you're above OSHA's exposure limit.
Anyone who works around ammonia — refrigeration compressor rooms, poultry houses, fertilizer operations, industrial cleaning, chemical facilities — knows the paradox: at low concentrations it's obvious, and at dangerous concentrations olfactory fatigue kicks in fast. Workers stop noticing what they're breathing.
The WatchGas SST1-A Serviceable NH3 Gas Detector gives you a number instead of a nose.
It reads ammonia continuously in ppm — across OSHA's 8-hour PEL of 50 ppm and NIOSH's stricter 25 ppm REL — with configurable low, high, TWA, and STEL alarms. When ammonia hits the alarm threshold, the SST1-A vibrates, buzzes, and flashes. Single-button operation means a worker in gloves and PPE can silence, snooze, or acknowledge without taking gear off.
Why refrigeration safety managers, poultry producers, and chemical facility operators pick the SST1 line:
- Continuous NH3 monitoring with configurable alarm setpoints for low, high, TWA, and STEL
- Serviceable sensor — replace the NH3 cell instead of the whole unit at end-of-life
- 3-year warranty (vs. the industry-typical 2 years) on the SST1 platform
- Vibration + audible + visual alarms — you notice it in a compressor room
- Bump test and calibration compatible with the WatchGas SST-DOCK for fleet management
- Datalogging for compliance audits — IIAR, OSHA PSM (29 CFR 1910.119), and internal safety programs
PK Safety services the full WatchGas SST line with factory-trained technicians in-house. We also handle BW/Honeywell (Factory Authorized), RKI, and RAE Systems monitors — one shop for a mixed fleet. If the NH3 sensor drifts or needs replacement, send the unit to us — you're not shipping equipment into a black box. Call us at 800.829.9580 to talk through the SST1 setup with someone who actually understands ammonia detection and the WatchGas SST platform.
This is right for you if:
- You work around refrigeration ammonia (cold storage, food processing, grocery distribution centers)
- You're in ammonia-intensive agriculture (poultry, dairy, anhydrous fertilizer distribution)
- You need audit-ready NH3 exposure logs for IIAR or OSHA PSM compliance
- You've had a worker report headaches, or eye/throat irritation, and want to quantify what they're breathing
Technical documents:
Brochure
Specification Sheet
Quick Start Guide
Part Number: WG01-SST1-A — SST1-A Serviceable NH3 (Ammonia) Gas Detector
Frequently Asked Questions
What is the OSHA exposure limit for ammonia?
OSHA's permissible exposure limit (PEL) for ammonia is 50 ppm as an 8-hour time-weighted average, under 29 CFR 1910.1000 Table Z-1. NIOSH's recommended exposure limit (REL) is more conservative at 25 ppm TWA plus a 35 ppm short-term exposure limit (STEL) over any 15-minute period. Many facilities set internal exposure targets to the NIOSH level rather than the OSHA PEL.
The SST1-A has configurable alarm setpoints for low, high, TWA, and STEL — set to match your facility's exposure program (OSHA, NIOSH, ACGIH, or a stricter internal standard).
Where is ammonia detection required or recommended?
Ammonia detection is a compliance or best-practice requirement in several settings: industrial refrigeration systems containing more than 10,000 pounds of ammonia (OSHA's Process Safety Management standard, 29 CFR 1910.119); refrigeration systems covered by the IIAR (International Institute of Ammonia Refrigeration) standards; agricultural operations handling anhydrous ammonia; and any workplace where ammonia is used or stored that falls under OSHA's respiratory protection standard (29 CFR 1910.134).
Common industries that rely on the SST1-A: cold storage and food processing (refrigeration compressor rooms), poultry and dairy farming (ambient NH3 in barns), fertilizer distribution and application (anhydrous ammonia), industrial cleaning, and chemical manufacturing.
Why can't I just rely on smell to detect ammonia?
Ammonia has a very distinctive pungent smell at low concentrations — most people can detect NH3 easily at 5 ppm. But at higher concentrations, olfactory fatigue sets in fast: the sensory nerves become desensitized within minutes, and workers can no longer reliably tell whether concentrations are rising or falling. Olfactory fatigue is well-documented for NH3 and is a major reason continuous instrument monitoring is required in ammonia-intensive facilities.
A continuous readout in ppm from the SST1-A shows the actual concentration regardless of nose adaptation.
What does "serviceable" mean on the SST1-A?
Traditional single-gas monitors are single-use — when the sensor reaches end-of-life (typically 2–3 years), the whole unit gets replaced. The SST1 platform is designed to be serviced: the NH3 sensor cell can be replaced, extending the monitor's service life beyond the sensor's own lifespan. PK Safety services the WatchGas SST line in-house — send the unit in when the sensor needs replacement.
Does the SST1-A work with the WatchGas SST-DOCK docking station?
Yes. The SST1-A is fully compatible with the WatchGas SST-DOCK Touchscreen docking station for bump testing, calibration, and datalogging. If you're running a fleet of SST1 monitors, the SST-DOCK automates the compliance workflow — bump test plus calibration in about 60 seconds per unit, with automatic timestamped logs suitable for IIAR and OSHA PSM audits.
How does PK Safety support the SST1-A after purchase?
PK Safety carries the full WatchGas SST line and services the SST1-A with factory-trained technicians in-house. That includes sensor replacement, calibration, firmware updates, and warranty support. Call 800.829.9580 to talk through your NH3 monitoring setup with someone who knows the SST1 platform — not a call-center script.
Not sure this is the right fit? Call PK Safety at 800.829.9580. A person who knows ammonia monitoring and the WatchGas SST platform will pick up.
Ammonia is pungent enough to smell at 5 ppm — and by the time you can't smell it anymore, you're above OSHA's exposure limit.
Anyone who works around ammonia — refrigeration compressor rooms, poultry houses, fertilizer operations, industrial cleaning, chemical facilities — knows the paradox: at low concentrations it's obvious, and at dangerous concentrations olfactory fatigue kicks in fast. Workers stop noticing what they're breathing.
The WatchGas SST1-A Serviceable NH3 Gas Detector gives you a number instead of a nose.
It reads ammonia continuously in ppm — across OSHA's 8-hour PEL of 50 ppm and NIOSH's stricter 25 ppm REL — with configurable low, high, TWA, and STEL alarms. When ammonia hits the alarm threshold, the SST1-A vibrates, buzzes, and flashes. Single-button operation means a worker in gloves and PPE can silence, snooze, or acknowledge without taking gear off.
Why refrigeration safety managers, poultry producers, and chemical facility operators pick the SST1 line:
- Continuous NH3 monitoring with configurable alarm setpoints for low, high, TWA, and STEL
- Serviceable sensor — replace the NH3 cell instead of the whole unit at end-of-life
- 3-year warranty (vs. the industry-typical 2 years) on the SST1 platform
- Vibration + audible + visual alarms — you notice it in a compressor room
- Bump test and calibration compatible with the WatchGas SST-DOCK for fleet management
- Datalogging for compliance audits — IIAR, OSHA PSM (29 CFR 1910.119), and internal safety programs
PK Safety services the full WatchGas SST line with factory-trained technicians in-house. We also handle BW/Honeywell (Factory Authorized), RKI, and RAE Systems monitors — one shop for a mixed fleet. If the NH3 sensor drifts or needs replacement, send the unit to us — you're not shipping equipment into a black box. Call us at 800.829.9580 to talk through the SST1 setup with someone who actually understands ammonia detection and the WatchGas SST platform.
This is right for you if:
- You work around refrigeration ammonia (cold storage, food processing, grocery distribution centers)
- You're in ammonia-intensive agriculture (poultry, dairy, anhydrous fertilizer distribution)
- You need audit-ready NH3 exposure logs for IIAR or OSHA PSM compliance
- You've had a worker report headaches, or eye/throat irritation, and want to quantify what they're breathing
Technical documents:
Brochure
Specification Sheet
Quick Start Guide
Part Number: WG01-SST1-A — SST1-A Serviceable NH3 (Ammonia) Gas Detector
Frequently Asked Questions
What is the OSHA exposure limit for ammonia?
OSHA's permissible exposure limit (PEL) for ammonia is 50 ppm as an 8-hour time-weighted average, under 29 CFR 1910.1000 Table Z-1. NIOSH's recommended exposure limit (REL) is more conservative at 25 ppm TWA plus a 35 ppm short-term exposure limit (STEL) over any 15-minute period. Many facilities set internal exposure targets to the NIOSH level rather than the OSHA PEL.
The SST1-A has configurable alarm setpoints for low, high, TWA, and STEL — set to match your facility's exposure program (OSHA, NIOSH, ACGIH, or a stricter internal standard).
Where is ammonia detection required or recommended?
Ammonia detection is a compliance or best-practice requirement in several settings: industrial refrigeration systems containing more than 10,000 pounds of ammonia (OSHA's Process Safety Management standard, 29 CFR 1910.119); refrigeration systems covered by the IIAR (International Institute of Ammonia Refrigeration) standards; agricultural operations handling anhydrous ammonia; and any workplace where ammonia is used or stored that falls under OSHA's respiratory protection standard (29 CFR 1910.134).
Common industries that rely on the SST1-A: cold storage and food processing (refrigeration compressor rooms), poultry and dairy farming (ambient NH3 in barns), fertilizer distribution and application (anhydrous ammonia), industrial cleaning, and chemical manufacturing.
Why can't I just rely on smell to detect ammonia?
Ammonia has a very distinctive pungent smell at low concentrations — most people can detect NH3 easily at 5 ppm. But at higher concentrations, olfactory fatigue sets in fast: the sensory nerves become desensitized within minutes, and workers can no longer reliably tell whether concentrations are rising or falling. Olfactory fatigue is well-documented for NH3 and is a major reason continuous instrument monitoring is required in ammonia-intensive facilities.
A continuous readout in ppm from the SST1-A shows the actual concentration regardless of nose adaptation.
What does "serviceable" mean on the SST1-A?
Traditional single-gas monitors are single-use — when the sensor reaches end-of-life (typically 2–3 years), the whole unit gets replaced. The SST1 platform is designed to be serviced: the NH3 sensor cell can be replaced, extending the monitor's service life beyond the sensor's own lifespan. PK Safety services the WatchGas SST line in-house — send the unit in when the sensor needs replacement.
Does the SST1-A work with the WatchGas SST-DOCK docking station?
Yes. The SST1-A is fully compatible with the WatchGas SST-DOCK Touchscreen docking station for bump testing, calibration, and datalogging. If you're running a fleet of SST1 monitors, the SST-DOCK automates the compliance workflow — bump test plus calibration in about 60 seconds per unit, with automatic timestamped logs suitable for IIAR and OSHA PSM audits.
How does PK Safety support the SST1-A after purchase?
PK Safety carries the full WatchGas SST line and services the SST1-A with factory-trained technicians in-house. That includes sensor replacement, calibration, firmware updates, and warranty support. Call 800.829.9580 to talk through your NH3 monitoring setup with someone who knows the SST1 platform — not a call-center script.
Not sure this is the right fit? Call PK Safety at 800.829.9580. A person who knows ammonia monitoring and the WatchGas SST platform will pick up.
Specifications
Specifications
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