10
GG-NH3
Specifications
Input Power:
+24 VDC, 350 mA
Detection Principle:
Electrochemical
Detection Method:
Diffusion
Gases:
Ammonia (NH3)
Ranges:
0/100 (standard)
0/250
0/300
0/500
0/1000
Custom ranges available. Call for more information
Output Signal:
Linear 4/20 mA (max input impedance:
700 Ohms)
Response Time:
T50 = less than 30 seconds
T90 = less than 60 seconds
Accuracy:
+/- 5% of full-scale, but dependent on
calibration gas accuracy and time since last calibration
Zero Drift:
Less than 0.1% of full-scale per month,
non-cumulative
Span Drift:
Application dependent, but generally less
than 3% per month
Linearity:
+/- 0.5% of full-scale
Repeatability:
+/- 1% of full scale
SafeCell Viability Check:
Automatic electrical viability
test of the electrochemical cell every 40 seconds.
Failure of the test results in 0.5 mA output after 6
hours of continued and consecutive test failures.
Power (green) LED:
Blinks once per second for 60
seconds during power-up. If supply voltage is too
low (<10 VDC) or improperly grounded, green LED
will blink once per second continuously. Stays steady
on to indicate power. Blinks twice per second in
calibration mode (4-minute timeout delay)
Status (amber) LED:
Blinks once per second if RFI
(radio frequency interference) is detected
Fault (red) LED:
Stays on steady if supply voltage is
too low (<10 VDC)
Wiring Connections:
3-conductor, shielded,
stranded, ≥ 20 AWG cable (General Cable C2525A or
equivalent) up to 1500 ft
Terminal Block Plug (Field Wiring):
26-12 AWG,
torque 4.5 lbs-in
Enclosure:
Injection-molded, NEMA 3RX washdown-
duty, polycarbonate sensor housing with hinged lid
and captive screw. For non-classified areas.
Optional 18 GA, NEMA 3RX washdown-duty stainless
steel enclosure with hinged lid and captive screw. For
non-classified areas
Temperature Range:
-50˚F to +122˚F (-46˚C to
+50˚C)
Humidity Range:
5% to 100% condensing
Dimensions:
7.7" high x 6.7: wide x 3.8" deep
Weight:
3.0 lbs
Certification:
ETL Listed: Conforms to UL 61010-1
Certified to CSA C22.2 No. 61010-1
