Service manual

MDS E-SCAN MPR E-SCAN /INSTALLATION

1.5 Cooling System Requirements

When supplied with a vortex cooler a clean and dry air supply of the proper pressure

(approximately 90 PSI at 8 cubic ft/min.) is required. If equipped with the cooling fan option the

console must be mounted in a controlled environment.

1.6 Start-Up

Turn power on. Allow sufficient time for the sensing head to stabilize at the process

temperature. It is recommend that no adjustments be made for at least 15 minutes after start-up.

Compare the reading against a sample taken from the process line close to where the unit is

installed and at the process operating temperature. If the sample does not equal the displayed

reading, adjust the analog zero per Operation/Calibration section.

1.7 Outputs

1.7.1 Relays

All alarm contacts are 5A, 250 VAC, resistive.

1.7.2 Printer Output

The MDS E-Scan includes a printer mounted in the cabinet.

1.7.3 Analog Outputs

The MDS E-Scan offers current or voltage outputs for the measurement. The standard output for

these readings is a 4 to 20 ma signal that is referenced to ground (non-isolated) so that any device

that is connected to these outputs must have a floating (or isolated) input. Isolated current output

modules are available as an option.

Important: Prior to shipment the sensing head is matched to the console and factory

calibrated. DO NOT ATTEMPT TO RE-CALIBRATE