Vaisala HMD70U Service Manual Page 143

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141
Ref. B211083EN-B ©Vaisala 2011
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
Technical Data
Performance
Measurement ranges (bidirectional) ±50 Pa
±0.25 in H
2
O
Overpressure
proof pressure 0.7 bar
burst pressure 1.7 bar
static pressure 1.7 bar
Pressure type differential, gauge, vacuum and compound
Accuracy 0.25 % span or 0.5 % span, depending on choice
Repeatability
for 0.25 % span accuracy 0.03 %
for 0.5 % span accuracy 0.05 %
Electrical resolution 1 x 10
-4
span
Long-term stability ≤0.5 % span/year
Response time (10 ... 90 %) 250 ms
Warm-up time 15 s
Compensated temperature range +2 ... +57 °C
(+35.6 ... +134.6 °F)
Temperature dependence ±0.36 % / 10 K
(reference 20 °C (68 °F))
Mounting position
error (zero adjustable) ≤0.25 %
Adjustments (front accessible)
zero ±5 % span
span ±3 % span
Inputs and Outputs
Process connection 1/8 NPT female
according to ANSI/ASME B1.20.1
Output signal
2-wire 4 ... 20 mA
3-wire 0 ... 5 V
Operating voltage 12 ... 36 VDC
Max. loop resistance
for 4 ... 20 mA ≤ (Supply voltage - 12V)/0.022 A
Supply current
for 0 ... 5 V output max. 10 mA
for 4 ... 20 mA output max. 20 mA
Electrical connection Screw terminals, 12 ... 22 AWG
(0.33 up to 3.31 mm
2
)
Operating Environment
Operating temperature -29 ... +70 °C (-20.2 ... +158 °F)
Storage temperature -40 ... +82 °C (-40 ... +179.6 °F)
Electromagnetic compatibility (EN 61326-1),
basic immunity test requirements
Mechanics
Medium (measured gas) clean and dry air, non-conducting
and non-corrosive gases
Material
process connection brass
sensor element silicon, aluminium, glass
case Polycarbonate, glass filled (UL94-V-1)
Mounting DIN rail types EN 50022, EN 50035
and EN 50045
Housing classification IP30
Weight 0.16 kg
Dimensions
Dimensions in mm
Figure 1
Figure 2 with Process
Valve Actuator and
Test Jacks
Measurement range:
P (+/-50 Pa) or W (+/-0.25 in H
2
O)
Accuracy: 2 (0.25 % span) or 5 (0.5 % span)
Output: C (current) or V (voltage)
Option: (blank) or T
PDT102 - XXXT
Order Information for PDT102
125.99
22.6
99.6
80.8
134.4
22.6
99.6
80.8
Note: If used in an electromagnetic field of 3 V/m, with narrow frequency area
of 80 - 120 Mhz, it is possible that the current output of PDT102 can deviate max.
0.3% (with accuracy specified 0.25%).
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