Novalynx 225-HMP60A User manual

DOC 225-HMP60x UM 20210202
225-HMP60x
User Manual
225-HMP60A (0-1 V outputs)
225-HMP60C (0-5 V outputs)
Temperature and Relative Humidity Sensor
Phone [phone]
Email no[email protected] Website www.novalynx.com

NovaLynx Corporation
225-HMP60x Page 2 February 2021
Receiving and Unpacking
Carefully unpack all components and compare to the packing list. Notify NovaLynx Corporation
immediately concerning any discrepancy. Inspect equipment to detect any damage that may have
occurred during shipment. In the event of damage, any claim for loss must be filed immediately with
the carrier by the consignee. Damages to equipment sent via Parcel Post or UPS require the consignee
to contact NovaLynx Corporation for instructions.
Returns
If equipment is to be returned to the factory for any reason, call NovaLynx between 8:00 a.m. and 4:00
p.m. Pacific Time to request a Return Authorization Number (RA#). Include with the returned
equipment a description of the problem and the name, address, and daytime phone number of the
sender. Carefully pack the equipment to prevent damage or additional damage during the return
shipment. Call NovaLynx for packing instructions in the case of delicate or sensitive items. If packing
facilities are not available take the equipment to the nearest Post Office, UPS, or other freight service
and obtain assistance with the packaging. Please write the RA# on the outside of the box.
Warranty
NovaLynx Corporation warrants that its products are free from defects in material and workmanship
under normal use and service for a period of one year from the date of shipment from the factory.
NovaLynx Corporation's obligations under this warranty are limited to, at NovaLynx's option: (i)
replacing; or (ii) repairing; any product determined to be defective. In no case shall NovaLynx
Corporation's liability exceed product's original purchase price. This warranty does not apply to any
equipment that has been repaired or altered, except by NovaLynx Corporation, or that has been
subjected to misuse, negligence, or accident. It is expressly agreed that this warranty will be in lieu of
all warranties of fitness and in lieu of the warranty of merchantability.
Address
NovaLynx Corporation
431 Crown Point Circle, Suite 120
Grass Valley, CA 95945-9531 USA
Phone: [phone]
Email: [e-mail]
Website: www.novalynx.com
Copyright © 1988-2021 by NovaLynx Corporation

NovaLynx Corporation
225-HMP60x Page 3 February 2021
CONTENTS
1 FORWARD ....................................................................................................................................................................... 4
2 INTRODUCTION ............................................................................................................................................................... 4
3 WIRE INSTALLATION TABLE ............................................................................................................................................. 4
4 SPECIFICATIONS .............................................................................................................................................................. 5
5 INSTALLATION ................................................................................................................................................................. 6
6 MAINTENANCE ................................................................................................................................................................ 6
7 CALIBRATION TEST KIT .................................................................................................................................................... 7
8 TROUBLESHOOTING ........................................................................................................................................................ 7

NovaLynx Corporation
225-HMP60x Page 4 February 2021
1 FORWARD
Thank you for purchasing NovaLynx products. NovaLynx has been designing and manufacturing
weather instruments since 1988. NovaLynx represents several well-known brands of quality
manufacturers, including Gill Instruments, RM Young, Kipp & Zonen, and Vaisala. It is our hope that our
products will meet all your monitoring requirements.
2 INTRODUCTION
225-HMP60 Temperature and Relative Humidity Sensors are highly accurate and easy to use. The
replaceable humidity sensor element and RTD temperature sensor are protected by a filter/cap which
screws into the stainless steel body. The probe is detachable from the 12" (30 cm) cable by means of
an M8 connector. Additional cable may be ordered per foot (NovaLynx 330-0524).
Relative humidity is measured by a thin film capacitive sensing element. The sensor range is 0 to 100%
relative humidity. Temperature is measured by a 1000 ohm RTD element. The temperature range is -40
to +60°C (-40 to +140°F).
 Model 225-HMP60A features two 0-1 V outputs
 Model 225-HMP60C features two 0-5 V outputs
3 WIRE INSTALLATION TABLE
CAUTION - To prevent damage to the sensor and monitoring equipment, disconnect power from the
system before connecting the sensor. Note carefully which wire table applies to your sensor.
Pin Wire Color Function 225-HMP60A 225-HMP60C
1 Brown +Power input 5 to 28 Vdc 8 to 28 VDC
2 White Relative humidity signal 0 to 1 V 0 to 5 V
3 Blue Ground (common) GND GND
4 Black Temperature signal 0 to 1 V 0 to 5 V
NC Clear Earth ground Earth GND Earth GND
225-HMP60 with Standard 12" Cable
Pin Wire Color Function 225-HMP60A 225-HMP60C
1 Red +Power input 5 to 28 Vdc 8 to 28 VDC
2 Brown Relative humidity signal 0 to 1 V 0 to 5 V
3 Black Ground (common) GND GND
4 White Temperature signal 0 to 1 V 0 to 5 V
NC Bare Earth ground Earth GND Earth GND
225-HMP60 with Extended Cable
24 AWG, 5-conductor, shielded (PN 330-0524)

NovaLynx Corporation
225-HMP60x Page 5 February 2021
4 SPECIFICATIONS
225-HMP60x Temperature and Relative Humidity Sensor
Humidity sensor Vaisala INTERCAP® (replaceable)
Measurement Range 0 to 100% RH
Typical accuracy:
±3 %RH (0 … 90 %RH)
±5 %RH (90 … 100 %RH)
at −40 … 0 °C and +40 … +60 °C ±5 %RH (0 … 90 %RH)
(−40 … +32 °F and +104 … +140 °F) ±7 %RH (90 … 100 %RH)
Temperature sensor 1000 ohm platinum resistive element (RTD)
Measurement range −40 … +60 °C (−40 … +140 °F)
Accuracy:
at +10 … +30 °C (+50 … +86 °F) ±0.5 °C (±32.9 °F)
at −40 … +10 and +30 … +60 °C
(−40 … +50 and +86 … +140 °F)
2 channels
HMP60A
: 0 … 1 VDC
HMP60C
: 0 … 5 VDC
Start-up time 4 seconds
External loads
HMP60A
: RL min. 10 kΩ
HMP60C
: RL min. 50 kΩ
Accuracy at +20 °C (+68 °F) ±0.2 % of FS
Temperature dependence ±0.01 % of FS/°C (±0.006 % of FS/°F)
Power consumption 1 mA average, max. peak 5 mA
Operating voltage
HMP60A
: 5 … 28 VDC
HMP60C
: 8 … 28 VDC
Operating temperature −40 … +60 °C (−40 … +140 °F)
IP rating IP65
EMC compliance EN 61326-1, industrial environment
Regulatory compliance CE, ROHS Directive, EMC Directive
Probe body Stainless steel (AISI 316)
Probe filter Chrome coated ABS plastic (replaceable)
Probe connector 4-pin M8 (IEC 60947-5-2)
Cable Polyurethane or FEP, 12 inch (30 cm), tinned leads
Size 0.47" Dia (12 mm) x 3" L (80 mm), threaded M12 x 1
Weight / Shipping 1 oz (28 g) / 0.4 lb (182 g)
Operating environment
Mechanical
±0.6 °C (±33.08 °F)
at 0 … +40 °C (+32 … +140 °F)
Relative Humidity
Temperature
Analog outputs
Power requirements

NovaLynx Corporation
225-HMP60x Page 6 February 2021
5 INSTALLATION
Note: The tip of the sensor may be protected by a yellow plastic cap to prevent damage in shipping.
Remove the yellow cap before installing the sensor.
The 225-HMP60 sensors must be protected from direct sunlight and precipitation when used outdoors
for weather monitoring. A variety of sunshields are available, ranging from self-aspirated to fan-
aspirated models. Fan aspirated sunshields are preferred where there is little or no air movement.
Some fan-aspirated units include a solar array, eliminating the need for an external power source for
the fan.
Note: When model 380-280-HMP60 Sunshield is ordered at the same time as the 255-
HMP60x Sensor, the sensor is pre-assembled, making installation simpler.
Recommended sunshields include brackets for mast mounting by means of a U-bolt. The U-bolt can be
removed for surface mounting the bracket. Refer to instructions included with the specific model for
installation of the sensor and mounting options.
Mast-mounted sensors are usually positioned at "shelter" height, or about four feet above ground
level, on the north side of the mast. Temperature readings can be affected by heat reflected from the
ground so try to avoid installation over asphalt or bare ground.
Wire the sensor to your monitoring equipment according to the wire installation tables (Section 3). Use
the table marked "225-HMP60 with Extended Cable" if the optional additional cable was ordered.
Program your logger or PLC to power the sensor for at least 4 seconds before taking a reading.
6 MAINTENANCE
The 225-HMP60 Relative Humidity and Temperature Sensors do not require calibration and have no
calibration adjustments available to the user. Field-check the accuracy of the sensor by comparison
with an accurate reference on an annual basis, or more often in dusty or polluted areas.
The probe may be removed from the sunshield for inspection and service if necessary. With the probe
removed, clean off any dust that has collected on or inside the sunshield.
Sunshield Type Power Supply
380-280-HMP60 Self Aspirated n/a
380-281 Self Aspirated n/a
380-283 Fan Aspirated Integrated solar panel / NiMh battery
380-RHRS Self Aspirated n/a
380-43502 Fan Aspirated 12-14 Vdc @ 500 mA for blower, AC adapter included

NovaLynx Corporation
225-HMP60x Page 7 February 2021
The sensor elements are protected by a removable cap/filter. The cap can be replaced if the filter is
dirty. The humidity sensor chip is replaceable. The chip is factory-trimmed so that there is no need to
calibrate after replacing the part. The temperature sensing element is a separate part and is not user-
serviceable. Note: Unscrew counter-clockwise to remove the cap.
The base of the probe is connected to the cable by an M8 connector. Note: The connection may be
covered by heat shrink tubing. The probe may be disconnected and returned to NovaLynx for a
calibration check, or the entire probe, cable and sunshield can be returned for service or a calibration
check. If only the probe is to be returned, inspect the cable carefully to ensure it is not the cause of any
problems you may have experienced with the sensor.
7 CALIBRATION TEST KIT
The NovaLynx 220-HMK15 Humidity Calibrator (sold separately) is available for checking the
calibration of electronic RH sensors by the user. The calibrator includes two chambers with saturated
salt solutions to test the sensor at 12% and 75% RH. Testing at two points verifies the overall operating
range of the humidity sensor. Spot checking at ambient conditions may not always detect a marginally
defective sensing element.
The calibration chambers work best in stable temperature conditions (indoors), but can also be used to
make quick and accurate field tests. In either case, the chamber humidity reading is corrected
according to the temperature indicated on a built-in thermometer. Sensor readings can be taken
within 5 minutes.
8 TROUBLESHOOTING
If the sensor’s output signal appears to be in error or is absent, check the power connections. At the
sensor cable, measure the input power source voltage with a voltmeter. Check each signal output by
disconnecting the signal wire from the monitoring equipment and then measure the output voltage.