| PROCESS MOISTURE
ANALYSER |
| Sensor |
Transmet IS |
| Measurement Range |
-100 to +20°C dew point |
| Accuracy |
±1°C from +20 to -60°C
dew point
±2°C from -60 to -100°C dew point |
| Hygrometric Units |
Digital processing linearisation with
pressure compensation from measured dew point with pressure compensation to any
other preferred unit-dew point, Lb/mmscf and mg/Nm³ (for natural gas),
ppmV |
| Pressure Input |
Fixed value (user programmed) or
dynamic measurement (4-20 mA pressure transmitter, optional) |
| Resolution |
0.1°C dp, 0.1°F dp, 0.01 ppmV, 0.1 mg/m³, 0.01 Lb/mmscf |
| Analogue Output |
4-20mA isolated (max load 600 W) |
| Sensor Calibration |
Traceable to British (NPL) and American
(NIST) National Humidity Standards |
| Alarms |
Two user adjustable for set points and
operating configurations (4 optional) |
| Mounting Panel |
19” anodised aluminium, 3U high; 132 x 200mm clearance depth |
| Accuracy |
±0.25% FS |
| SAMPLE CONDITIONING SYSTEMS
|
| Enclosure |
Glass fibre reinforced polyester (flame
retarding, anti-static). All fixtures stainless steel. Option for complete
enclosure in AISI 316 stainless steel |
| Dimensions |
775H x 612W x 329D mm |
| Enclosure Mounting |
Stainless steel wall mounting
brackets |
| Ingress Protection |
IP65 / IP66 optional (NEMA 4) |
| Cable/Pipework |
All through base of enclosure. Pre-machined M20 entries clearance holes for sensor field cable and heater power supply cable entries. 6mm bulkhead compression couplings for process gas supply and exhaust |
| Flow Rate |
5 Nl/min (add 10 Nl/min for
configuration with 'continuous drain' arrangement) |
| Analysis Pressure |
Up to 30 Mpa |
| Enclosure Temperature |
Heater/thermostat adjustable set-point
range 0 to control 50°C |
OPTIONS: |
Optional vortex cooling option
for desert conditions
Heater power supply 110/120 or
220/240/255 VAC, 50/60 Hz. Power consumption 100 or 200 W max. Add 40 W for single stage electricity heated pressure regulation where used (80 W for two stage).
Operating shaded position, on or off-shore, -40 to +40°C environment (+60°C max transient). |
Interconnecting Sensor Cable
Field cable spec Polyethylene insulated
instrumentation cable to BS5308 Part 1-two collectively screened dual
conductors 0.5mm². Polyethylene bedding, galvanised steel wire armour, and PVC
flame retardant outer sheath in blue. Low smoke and fume or halogen free outer
sheath options available.
Max length 250m (greater dependent
upon cable spec).
Terminating link Medium duty, grey PVC sheathed, braided
cables provided for safe area termination to Promet Monitor and
hazardous area termination inside the sample conditioning system
enclosure. |
Safety Aspects
The complete Promet
package meets the requirements of BS5345: Part 1: 1989 and other European codes
of practice for Zone 1 potentially hazardous area operation of the sensor and
sample conditioning system to analyse gases of all gas groupings inclusive of
IIC. The Promet Monitor must be located in a designated non-hazardous area (or
in an optional EExd housing).
All relevant components in the
potentially hazardous area are themselves individually certified to ATEX
standards. Transmet IS is ATEX certified by EECS for use in hazardous areas to
Ex II 1G EEx ia IIC T4 when used with a pair of isolation or shunt diode
barriers for signal and power supply connections. Transmet IS has been FM
listed (USA) CL1, Div1, Gp A, B, C & D, T4 and CSA (Canada) certified to Ex
ia (Class 1, Groups A, B, C & D). The standard sampling system enclosure is
constructed in anti-static, flame retardant GRP to EN50 014.6.3. The sample
conditioning system heater and thermostat are certified EEx d IIC T5 and EEx ed
IIC T6 respectively through PTB. Electrically heated pressure regulators (where
required) are certified EEx d IIC T3 through ISSeP. |
