Bacharach 3015-4286 User Manual

26 

Instruction 3015-4286 

Product Type........................ Single zone infrared monitoring system for low level continuous monitoring of 

ammonia refrigerant gas used in most commercial refrigeration systems 

Gas........................................ Ammonia, NH

3

, R-717 

Measuring Range................. 25 to 10,000 ppm 
Detector Type....................... Infrared, Non-Dispersive 

Coverage............................... Single zone 
Monitoring Distance............ Up to 50 ft (15.2 m) maximum gas-sample line length 

Front Panel .......................... 3 Indicator lights: 

MONITOR ON – Green light ON when the unit is operating normally,  

or flashing during warm-up 
SYSTEM FAULT – Yellow light ON when there is a system fault 

ALARM – Red light ON when the gas level is above an alarm setting 

Alarms.................................. Four SPDT relays are provided (rated 3 A, 240 VAC): 

three assigned to ppm level alarms – one assigned to system faults 

 

Internal audible alarm programmable for any of the following conditions:  

OFF, Any Alarm, System Fault, Leak Alarm, Spill Alarm, Evacuation Alarm, 

Monitor Stopped 

Sensitivity ............................ 1 ppm 

Accuracy ............................... ±10 ppm from 25 to 100 ppm, or ±10% of reading from 100 to 10,000 ppm 
Response Time/Flow Rate... Dependent on gas-sample line length; 0.25" OD x 0.17" ID tubing: 

ml/min 

 0 

(0) 

9 

675 

 10 

 

(3.0) 

13 

664 

 20 

 

(6.1) 

17 

653 

 30 

 

(9.1) 

22 

642 

 40 

 

(12.2) 

26 

631 

 50 

 

(15.2) 

30 

620 

Warm-up Time..................... 15 minutes 

Temperature Drift ............... ±0.8% of reading per degrees C 
System Noise ....................... Less than 40dB(A) at 10 ft (3 m) 

Conditioned Signal .............. 4

−20 mA current loop 

Power Safety Mode.............. Fully automatic system reset; all programmed parameters retained 
Operating Temperature ...... 32 to 122°F (0 to 50°C) 

Storage Temperature ..........

−4 to 122°F (−20 to 50°C) 

Ambient Humidity............... 5 to 90% RH (non-condensing) 
Altitude Limit ...................... 6,562 ft (2,000 m) 
AC Power.............................. 100 to 240 VAC, 50/60 Hz 

Power Consumption ............ 15 Watts 
Size/Weight .......................... 7.4"H x 15"W x 3.3"D / 5 lbs. 

Certification ......................... UL 61010A-1; CAN/CSA 22.2 No. 1010-1B:1997;  

CE Mark (see inside front cover) 

Warranty.............................. 2 Years from date of shipment