Define Instruments TM-2HLI Operating Manual

TM-2HLI

Isolated Transmitter

USB programmable! Free soware at
www.deneinstruments.com/toolbox

TM-2HLI Common Specications

Conguration 2-wire 4–20mA (loop powered)

Power supply 9.5–36V DC

Supply voltage sensitivity < ±0.005%/V FSO

Output load resistance 700Ω at 24V DC (50Ω/V

above 9.5V DC)

Maximum output current Limited to <28mA (Emission
& immunity)

EMC compliance Emissions (EN 61326). Immunity (EN

61326). Safety (EN 61010-1).

Accurate to <±0.03% FSO typical

Ambient dri <±0.003%/°C FSO typical

Noise immunity 125dB CMRR average (2.0kV DC limit)

R.F. immunity <1% eect FSO typical

Isolation test voltages Between input/output: 3750V AC for 1min

Response time 400msec typical (10–90% 300msec typical)

Casing (H x W x D) Head mount 23 x 44 x 44mm (0.91 x 1.73 x 1.73")

Operating temperature -20 to 85°C (-4 to 185°F)

Storage temperature -20 to 100°C (-4 to 212°F)

Operating humidity 5–85%RH max (non-condensing)

1

Wiring

U
[Rem

R
he
a

SB Header

ove Cap]

equires

ad-mount

dapter

LOOP OUTPUT

Rload

4−20mA

u

t

U

S

B

B

-

B

RTD INPUT (Pt100/Pt1000)

V-

-

p

t

u

O

A

m

A

+

B+B-

9.5−36V DC

V+

+

A

2

Thermocouple Input Specications

Thermocouple types B, E, J, K, N, R, S, T

USB programmable zero 0–±99% of the span

Input impedance 1MΩ min

Thermocouple lead resistance 100Ω max

Cold junction comp. -20 to 90°C (-4 to 194°F)

Accuracy E, J, K, N, T: < ±1°C. B, R, S: < ±2°C.

Temperature dri E, J, K, N, T: < ±0.05°C. B, R, S: < ±0.2°C.

Sensor break output drive Function high upscale/low downscale

CJC error < ±1°C

RTD Input Specications

RTD input Pt100 or Pt1000 DIN 3-wire type (2-wire can be used
with oset calibration)

Sensor current 0.15mA nominal

Lead wire resistance Pt100: 10Ω/wire max. Pt1000: 5Ω/wire max.

0.02% FSO oset error per Ω of lead resistance.

Accuracy ≤ 0.3°C

USB programmable zero 0–±99% of the span

USB programmable span -200 to 850°C (-328 to 1562°F)

Sensor break output drive Function high upscale/low downscale

Linearity (Pt100) 0.02% FSO for span inputs ≤200°C (392°F)

0.1% FSO for span inputs ≤850°C (1562°F)

Linearity (Pt1000) 0.02% FSO for span inputs ≤200°C (392°F)

0.2% FSO for span inputs ≤520°C (968°F)

3

New Zealand

(Head O ce)

[phone]

www.de neinstruments.co.nz

Copyright © 2017 Dene Instruments

4

United States (Dallas, TX)

[phone]

www.de neinstruments.com

South Africa (Pretoria)

www.de neinstruments.co.za

TM-2HLI-MAN-17V10 (0628)