5
44-6800 Series
DOPSM2019X012
All Rights Reserved.
June 2019
CAUTION
CAUTION
supply should be turned off. As a safety precaution,
a pressure relief device should be installed
downstream of the regulator.
Do not open packaging until ready for installation
or in a clean environment. Product is cleaned in
accordance with CGA 4.1 and ASTM G93, Verification
Type 1, Test 1 and Test 2. With periodic verification
of cleaning process to MIL-STD-1330D.
Inspect the regulator for physical damage and contamination.
Do not connect the regulator if you detect oil, grease or
damaged parts. If the regulator, valve or accessory is
damaged, contact your local TESCOM representative to have
the regulator cleaned or repaired
.
Follow all laws, regulations and industry requirements
for electrical wiring. All electrical wiring must be
terminated in an inaccessible location. Where the
electrical housing is separate from the regulator body
appropriate wiring to connect the two assemblies
shall follow hazardous location requirements per
applicable laws and regulations.
a. Make sure the regulator and electrical housing is mounted
securely.
b. Make sure the electrical power is turned off and locked
out.
c. Connect external ground if required to electrical housing.
d. Remove electrical housing cover.
e. Remove power supply connector and (if used) the 4-20
mA output connector from the electrical board. See
Figure 2.
f. Feed power supply wires and (if used) the 4-20 mA output
wires through the 1/2” NPT port. See Figure 2.
g. Screw the power supply and (if used) 4-20 mA output
wires to the connectors and internal ground. See Figure 2.
h. Verify all connections before applying power. Make sure
the supply power is in working range of unit purchased.
i. If the 4-20 mA output is used, an isolated excitation
voltage of 20-28 volts is needed. The 4-20 mA output
correlates to a thermocouple temperature reading of 50 to
400 °C / 122 to 752 °F. See Figure 2.
NOTICE
Should the thermocouple fail the analog output
would read greater than 25 mA and no electrical
power will be supplied to the heating element.
Disconnect power and check wiring.
j. Adjust the temperature with the TRIM1 potentiometer.
TRIM1 potentiometer, located on the electrical board,
provides a 270° of adjustment. The temperature set point
range is from 50 °C /122 °F (fully counter clockwise
position) to 400 °C /752 °F (fully clockwise position).
See Figure 3.
Product does not provide actual media temperature.
Actual media temperature should be taken from a
different device.
k. Heater Temperature Feedback Display (Optional):
The display reads the temperature of the heater in degrees
Celsius.
l. Temperature Set Button (Only with Optional Display):
This button is located on the control board. See Figure 4.
When pressed down the display will show the heater set
point temperature.
m. Place stopping plugs in any unclosed conduit entry.
3.3. Operation
3.3.1 Regulator Adjustment
Controlled outlet pressure settings are obtained using
TESCOM pressure reducing regulators by adjusting the
screw. Rotating the adjustment screw clockwise raises the
outlet pressure while a counterclockwise rotation coupled
with venting of the downstream side of the regulator plumbing
lowers the outlet pressure. Final adjustments should be made
in the direction of increasing pressure to obtain the most
accurate set point.
TESCOM regulators will operate with any liquid or gaseous
media compatible with the wetted materials.
3.3.2 Heater Temperature Controller Status
RED LED on the heater controller printed circuit board helps
to show the status of the controller. See Figure 5.
•
Shows that there is power to the controller.
•
Shows that the heater is energized. LED will be on for
3/4 of a second.
•
Shows out of range error or failed thermocouple when
flashing (on and off) at a high rate (1/4 second bursts).
Heater temperature feedback is provided with a 4-20mA
signal. The 4-20 mA output correlates to a thermocouple
temperature reading of 50 to 400 °C / 122 to 752 °F.
