Teledyne M201E manual 2.Analog Output Pin-Outs

Configurable Analog Output Overview Teledyne API Model M201E NH3 Analyzer Operator Manual

Table 3-2. Analog Output Pin-Outs

PIN	ANALOG OUTPUT	VOLTAGE SIGNAL	CURRENT SIGNAL
1	A1	V Out	I Out +
2		Ground	I Out -
3	A2	V Out	I Out +
4		Ground	I Out -
5	A3	V Out	I Out +
6		Ground	I Out -
7	A4	V Out	N/A
8		Ground	N/A

Additionally A1, A2 and A3 may be equipped with optional 0-20 mA current loop drivers. The 4-20 mA option is not available on A4.

Note: In actuality the analog output configuration of the analyzer may be different than stated above. The outputs can be configured differently at the factory depending on whether they were assigned during the procurement of the product. It is possible to check the configuration of the analyzer by accessing the ANALOG I/O CONFIGURATION through the DIAG menu.

The analyzer operates in Dual Mode during gas detection. This means each of the measured concentrations can have two separate slopes and offsets, one for the low range and one for the high range. Though uncommon, a user may decide to calibrate the analyzer with nitric oxide at, for example, 100 PPB using the LOW range and then perform another calibration at 450 PPB using the HIGH range. Through the analog outputs the user can then assign analog output A1 to TNxCNC1 and output A2 to TNxCNC2. Gases with the “1” designation use the slope and offset for the LOW range, while gases with the “2” designation will use the slope and offset for the HIGH range. It is recommended that both the LOW and HIGH ranges be calibrated at the same time. Independent of whether the HIGH range is actually being outputted to the analog outputs.

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