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Expo Technologies UK
T: +44 (0) 20 8398 8011
E: [email protected]
Expo Technologies US
T: +1 (440) 247 5314
E:[email protected]
Expo Technologies China
T: +86 532 8906 9858
E: [email protected]
MiniPurge
®
Control Unit Data
Action on Pressure Failure:
Alarm and Trip (isolate power to pressurized enclosure), user adjustable
Alarm Only.
Type of Operation:
Automatic leakage compensation using the Closed Loop Automatic
Pressurization System (CLAPS System).
Leakage Compensation
Capacity
1900 NI/min maximum.
Enclosure Material:
Stainless Steel 316L.
Mounting Method:
Wall mounting straps. Fixing holes as per drawing.
Temperature Limits:
Ambient temperature -60ºC to +55ºC
Purge media temperature -40ºC to +55ºC
Compressed Air Supply:
Clean, dry, oil free air or inert gas. Refer to Air Supply Quality section in
Installation of the System.
Supply Pressure:
4.2 to 10 barg (61 to 145 psi).
Main Regulator:
Set at 5 barg, 40 μm automatic drain supply inlet filter.
Logic Regulator and Gauge:
Fitted and set to 2.5 barg (36 psi).
Process Connections:
Purge supply and outlet to pressurized enclosure 1” NPT female.
Minimum supply line 25 mm (1”) ID tube, inlet sized appropriately for flow
rate.
Reference points & signals
1
/
8
”
NPT female, minimum 6 mm pipe to be
used.
Visual Indicators:
Alarm (Red
) / Pressurized (Green
).
System Purging: 4 LEDs that flash sequentially to indicate elapsed time
(black when not purging).
/PA Terminal Box:
GRP, Ex e IIC T6 Gb / Ex tb IIIC T85ºC Db IP66 T
amb
: -60ºC to 75ºC.
Mounted inside D760 system c/w terminals, front access cover & access
for glands on bottom of D760 system.
Power Interlock Switch:
DPNO switch, contact ratings 250 Vac 4 Amps (AC-15) / 24V DC 4A,
Ex d IIC T6 Gb / Ex tb IIIC T80ºC Db.
Alarm Switch:
SPCO switch, contact ratings 250 Vac 4 Amps (AC-15) / 24V DC 4A,
Ex d IIC T6 Gb / Ex tb IIIC T80ºC Db.
Intermediate Switch:
SPCO switch, contact ratings 250 Vac 4 Amps (AC-15) / 24V DC 4A,
Ex d IIC T6 Gb / Ex tb IIIC T80ºC Db.
Minimum Pressure Sensor:
Minimum: 0.5 mbarg.
Maximum: 5.0 mbarg.
Default Setting: 1.5 mbarg.
Tolerance -0, +0.7 mbarg.
Intermediate Sensor:
Minimum: 2.0 mbarg.
Maximum: 7 mbarg.
Default Setting: 4.0 mbarg.
Tolerance: -0, +10%.
High Pressure:
Minimum: 20 mbarg.
Maximum: 35 mbarg.
Default Setting: 30 mbarg.
Tolerance: -0, +10%.
