Sierra Monitor Corporation 2060-00, 2060-10 Introduction, Model, Ttl, Gas Monitor Configurations

Instruction Manual

1.0PRODUCT DESCRIPTION

1.1Introduction

The Model 2050 Ammonia and Model 2060 Refrigerant/ Halocarbon Gas Monitors are continuous duty, low cost stationary monitors for detection of high levels (50-500 PPM) of ammonia and halocarbon ("freons") refrigerant gases. See the specifications page for a full list of avail- able applicable halocarbons

This manual provides instructions for both the 2050 and 2060 series Gas Monitors, including the relay versions.

1.2 Application

These monitors are primarily used in and around freez- ers, refrigerators, and compressor rooms to warn of leaks and dangerous levels of these gases.

1.3 Configuration

An alarm is activated when the concentration of gas exceeds the user-adjustable level. An alarm condition activates the alarm light on the front of the monitor and generates an output signal. On Models 2050-00 and the 2060-00 the output signal a TTL (Transistor-Transis- tor-Logic signal) can activate a remote alarm through one of Sierra Monitor’s Alarm Panels. (The Model 2102 Dual Channel Alarm Panel can be connected up to 500 feet from the monitors. ) The models can be config- ured with a 0.5 amp, dry contact relay.

Model	Gas	TTL	Relay
2050-00	Ammonia	X	X
2060-00	Halocarbons	X	X

Table 1.1 Gas Monitor Configurations

factory setpoint for R12 is 500 ppm while the setpoint for R134 a is 50 ppm. See the specifications for more details.

The Model 2050 / 2060 is cross sensitive to other com- bustible gases. If combustible gasses in excess of 50 ppm are expected in the area please contact Sierra Moni- tor to determine amount of cross-sensitivity expected for the specific combustible gas. It is not recommended to use this unit in areas with combustible gases present.

The monitors are housed in a polystyrene enclosure that is suit- able for installation in freezer, re- frigerator or other applications. Test connections and adjustment controls are located on the out- side of the enclosure and are eas- ily used, even when the operator is wearing hand protection.

The Model 2050 Ammonia moni- tor has a factory alarm setpoint of 100 ppm NH3. This setpoint is user adjustible in the field over a range of 50 to 500 ppm NH3. The Model 2050 calibration can be checked with Hydrogen gas.

The Model 2060 Halocarbon monitor can be calibrated with carbon monoxide and the factory setpoint varies for the specific type of halocarbon present. The

Figure 1.1 Outline View - 2050/2060 Series

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