KROHNE LCD-H20 User Manual
Supplementary instructions
Supplementary instructions
OPTITEMP LCD-H20
OPTITEMP LCD-H20
OPTITEMP LCD-H20OPTITEMP LCD-H20
Loop powered LCD indicator for in-head mounting of
industrial thermometers
Supplementary instructions Supplementary instructions
© KROHNE 11/2011 - 4001594702 - AD OPTITEMP LCD-H20 R02 en
CONTENTS
OPTITEMP LCD-H20
1 Safety instructions 3
1.1 Scope of the document..................................................................................................... 3
1.2 Intended use ..................................................................................................................... 3
2 Device description 4
2.1 Device description ............................................................................................................ 4
2.2 Technical data................................................................................................................... 4
2.3 Dimensions ....................................................................................................................... 5
3 Installation 6
3.1 Mounting in the connection head ..................................................................................... 6
3.2 Configuration .................................................................................................................... 6
3.2.1 Programming procedure ........................................................................................................ 6
3.2.2 Setting the decimal point (dP) ................................................................................................ 7
3.2.3 Setup of the zero point (ZErO) ................................................................................................ 7
3.2.4 Setup of the span (SPAn) ........................................................................................................7
3.2.5 Limit of the indicator range (Li) .............................................................................................. 7
3.2.6 Setup of the filter (FiLT).......................................................................................................... 8
3.2.7 Setup of the resolution (riS).................................................................................................... 8
3.2.8 Summary................................................................................................................................. 8
4 Electrical connections 9
4.1 Connection diagram .........................................................................................................9
5 Operation 10
5.1 Normal mode.................................................................................................................. 10
5.2 Calibration ...................................................................................................................... 10
6 Service 11
6.1 Service ............................................................................................................................ 11
6.2 Ordering information...................................................................................................... 11
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OPTITEMP LCD-H20
1.1 Scope of the document
These Supplementary Instructions apply solely to the installation of the LCD-H20 indicator. The
technical details given in the handbook for industrial thermometers apply unchanged unless
excluded or superseded by these Instructions.
1.2 Intended use
The LCD-H20 indicator is a digital display to be installed in the 4…20 mA loop without the need
for an additional external power supply.
SAFETY INSTRUCTIONS 1
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3
2 DEVICE DESCRIPTION
2.1 Device description
The LCD-H20 indicator is designed for installation in a thermometer connection head with
window. The indicator features 12 mm LCD digits.
The indication range is adjustable between -1999 and 9999 using three pushbuttons. No
additional supply power is required.
As a rule, the LCD-H20 indicator is delivered pre-installed in a BUZ-HW connection head.
2.2 Technical data
Current input 4...20 mA
Operating range of the indicator 3.6 ...22 mA
Voltage drop 2.5 V
Display 4 digits incl. minus sign
Indication range Scaleable from -1999 to 9999 as well as 0 to 3 decimal places
Scale setting Using 3 pushbuttons
Ambient temperature range -20...+70°C / -4...+158°F
Typical accuracy ±0.1% of programmed span ±1 digit
Cable thickness
Mounting kit KDST1 suitable for BUZ-HW connection head
Weight (only LDC-H20) 30 g / 0.07 lb
Weight (BUZ-HW connection
head and LDC-H20)
OPTITEMP LCD-H20
12 mm high
≤ 1.0 mm2, AWG 16
375 g / 0.8 lb
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