4.02-2
LPN-H %RH Transmitter Specifications.
Accurate to ±2% FSO Typical. 0~100%RH @ 25C Saturated Salt Calibration.
Important: For continuous measurements of ≥90%RH, refer to note 2 below.
Ambient Temperature Drift <±0.05%/C FSO Typical.
Humidity Sensor-Hysteresis ±0.8% of Span Typical.
-Linearity ±0.5%RH Typical.
-Repeatability ±0.5%RH Typical.
-Long Term Drift ±1%RH Typical at 50%RH in 5 years.
LPN-H Temperature Transmitter Specifications.
Accurate to <±0.1% FSO Typical.
LinearityandRepeatability <±0.1% FSO Typical.
Ambient Temperature Drift <±0.02%/C FSO Typical.
RTD Sensor Pt100 RTD, Class A Din 43760.
Sensor Current 0.5mA.
LPN-H Common Specifications.
Output. 2 wire 4~20mA (Loop Powered).
PowerSupply. 9~33Vdc.
SupplyVoltageSensitivity. <±0.01%/V FSO.
Maximum Output Current. Limited to <36mA.
Output Load Resistance. 750Ω@ 24Vdc. (50Ω/V Above 9Vdc).
EMC Compliances Emissions EN 55022-A. Immunity EN 50082-1, <1% Effect FSO Typ.
Isolation Test Voltage Between %RH and Temperature; 50Vdc for 1 min.
Operating Temperature. -at headA) 0~70C.
-at sensorB) -30~85C (LPN-H-D)
Storage Temperature. -30~85C.
OperatingHumidity. -at headA) 5~85%RH Max. Non-condensing.
-at sensorB) 0~100%RH. Refer note 4 below.
Note: A)
'at head
' refers to ratings for electronics housed in the connection head.
B)
'at sensor
' refers to ratings for electronics housed in the protective cap.
Note1.Goodairflowandgoodairmixingmustbemaintainedoverthesensortominimiselocaltemperaturefluctuations,andtoensureaccuratemeasurements.
Note 2. The RH sensors quickly recover from condensation or wetting. However, after 24 hours or longer exposures to either high >90%RH or
continuous condensation, an upward shift of 2% to 3%RH may occur. This shift is repeatable and can be reversed by placing the sensor in a low
10%RH environment for a 10 hour period.
CONDENSATIONoccurs wheneverthe surfacetemperatureof thesensor's activeareadrops belowthe ambientdewpoint ofthe surroundinggas.
Condensation forms on the sensor (or any surface) even if the surface temperature only momentarily drops below the ambient dew point. Small
temperature fluctuations near the sensor can unknowingly cause condensation to form when operating at humidity levels above 90%.
Whilequicktocondense,wateris slowtoevaporateinhigh humidityconditions.(iewhenthe surfacetemperatureofthesensor isonlyslightlyabove
the ambient dew point.) Because of this, a sensor's recovery from either condensation or wetting is much longer than its normal time response.
During recovery, the sensor outputs a constant 100%RH signal, regardless of the ambient RH.
Product Liability. This information describes our products. It does not constitute guaranteed properties and is not intended to affirm the suitability
of a product for a particular application. Due to ongoing research and development, designs, specifications, and documentation are subject to
changewithoutnotification.Regrettably,omissions andexceptionscannotbe completelyruledout.No liabilitywillbeaccepted forerrors,omissions
or amendments to this specification. Technical data are always specified by their average values and are based on Standard Calibration Units at
25C, unless otherwise specified. Each product is subject to the ‘Conditions of Sale’.
Warning:Theseproductsarenotdesignedforusein,andshouldnotbeusedforpatientconnectedapplications.Inanycriticalinstallation
an independant fail-safe back-up system must always be implemented.
LPN-H-D Dimensions.
LPN-H-W Dimensions. LPN-H-F Dimensions.
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