IM_1XTXSW-08
www.ueonline.com
2
FLAMEPROOF - SPECIAL CONDITIONS FOR SAFE USE
• Field wiring must be rated 105°C minimum. For ambient temperatures below -10°C, use suitable field wiring.
• Blanking elements from factory have been tested for flameproof “d” and dust “tb” with the enclosure as an assembly and carry no
markings.
• A suitable thermowell made from corrosion-resistant material and engaging 5 threads minimum (with thread sealant) is required for
the local spring loaded temperature sensor to maintain IP66
Flameproof joint and gap details
– Enclosure to cover threaded joint: 4”-16 UN-2, 7 threads engaged minimum
– Glass to cover cemented joint: 0.753” (19.1 mm) rabbet/spigot minimum length
– Breather element threaded joint: M8-1.25 (6g/6H medium fit class), 11 threads engaged minimum
– Electrical conduit threaded joint: 3/4”-14 NPT, 5 threads engaged minimum
– Enclosure to sensor threaded joint:
• Pressure models: 1”-20 UNEF-2, 10 threads engaged minimum
• Temperature models: 1/2”-14 NPT, 5 threads engaged minimum
• Remote and local spring loaded temperature sensor gap joints: 0.0045” (0.114 mm) maximum annular gap by
1.25” (31.8 mm) minimum length
• The device must be cleaned with a damp cloth to avoid static discharge.
Dual Seal Adaptor (Option M041)
• Threaded Dual Seal Adaptor Option Enclosure to One Series Enclosure: 1”-20 UNEF-2, 10 threads engaged minimum
• Breather element threaded joint: 1/4”-20 UNC-2, 10 threads engaged minimum
• Secondary Seal Housing to union housing joint: 0 .580” (14.73 mm) rabbet/spigot minimum length, maximum annular gap 0.003“
(0.08 mm)
• Sensor to union housing joint: 0 .580” (14.73 mm) rabbet/spigot minimum length, maximum gap 0.003” (0.08 mm)
• Threaded Dual Seal Adaptor option to Sensor: 1”-20 UNEF-2, 10 threads engaged minimum or 1/2”-14 NPT 5 threads engaged
minimum.
CONTINUOUS OPERATION SHOULD NOT EXCEED THE DESIGNATED OVER RANGE PRESSURE OR MAXIMUM WORKING PRESSURE
STATED WITHIN THE LITERATURE AND ON DEVICE NAMEPLATE.
Over Range Pressure: The maximum pressure to which a pressure sensor may be continuously subjected without cause damage and
maintaining set point repeatability.
Max Working Pressure: The maximum that can be applied to both process ports simultaneously without affecting sensor performance.
The One Series transmitter-switch product line is based on an all-solid-state electronic module that incorporates a microproces-
sor. The combination of features like no moving parts and IAW
®
self-diagnostics provide a highly reliable, accurate and repeatable
monitor for detecting pressure and temperature thresholds which once reached, can make intelligent switch decisions based upon
retained settings and current conditions. The One Series monitors its own health and reports the status locally through the IAW
®
(I Am Working) feature that provides a solution to the “blind device” issue common with mechanical switches. You will always know
the health status of the One Series.
The One Series 1XTXSW and 1XTX00 models include a standard 4-20 mA output with HART
®
version 7 protocol for control of all
transmitter and switching functions. The IAW
®
self-diagnostics feature combined with the NAMUR NE 43 standard provides an addi-
tional method of remotely reporting detected faults. By monitoring the local display or either of the two fail-safe relays or the fail-
safe-open IAW
®
OUTPUT or the 4-20 mA signal, the One Series offers several and redundant methods of fault reporting.
The One Series is also very rugged, featuring a Type 4X, weather-tight enclosure suitable for harsh environments and hazardous
(Class I, Division 1) locations. The 0.5% accuracy rating is maintained over a very wide -40
°
C to +70
°
C operating range using
active temperature compensation. Repeatability rivals that of a process transmitter, with a 0.1% of full range while the switches set
point and deadband (hysteresis) are fully programmable over the entire range of the sensor. Reaction time for the One Series to a
process change is typically 100 mS or less.
