Delta Controls 2HT User Manual

Page 12

002522-2HT 180210.doc

FUNCTIONAL SPECIFICATIONS

Service :-

Liquid, Gas or Vapour

Ranges :-

0 ~ 1 to 0 ~ 1000 Bar
( 0 ~ 16 to 0 ~ 16,000 psi )

Sensor Limits:-

2 * URL Overpressure Stainless Steels except range GA, 0
to 1000 bar = 1.5 * URL
1.5 * URL Overpressure Monel & Hastelloy

Output :-

4 to 20 mA DC 2 Wire System with digital AC signal
superimposed on to it, using the HART protocol.

Power Supply :-

9 to 55 Volts DC (Subject to 28 V maximum on Intrinsically
Safe installations)

Load Limits :-

Dependent upon installation and PSU, See chart in Electrical
Installation

Hazardous Area
Certifications :-

See Certified Products

Zero Elevation &
Suppression:-

Can be set anywhere within the sensor limits as long as the
span is greater or equal to the minimum span, and URV does
not exceed URL

Normal or Reverse
action :-

Set by reversing the upper and lower range values. See
Zero, Span and Rangeability

Temperature Limits:-

Operating :-

-40 to +85 Degrees C

Storage :-

-50 to +110 Degrees C

Display :-

-30 to +80 Degrees C

Failure Mode
Alarms:-

High or Low (Analogue) for a major transmitter malfunction.

Humidity Limits :-

0 to 100% RH

Turn-on Time :-

Less than 6 Seconds, This includes full self diagnostics

Volumetric
Displacement :-

< 1 microlitre

Damping :-

0 to 39 Seconds, in addition to the sensor response time.

PERFORMANCE SPECIFICATIONS

Accuracy

For spans of 1 : 1 to 10 : 1
+/- 0.1 % of SPAN, Including Linearity, Hysteresis and
Repeatability

For spans below 10 : 1
+/-0.15 % of SPAN

Stability

Typically less than 0.15 % URL per annum

Temperature Effect

Total effect +/- 0.10 % at Max. Span over ambient range

Overrange Effect

Zero shift, 0.2 % of URL

Power Up

Less than 6

seconds, including Diagnostics, Display and

Memory tests

Vibration Effect

5 g Peak sinusoidal at 5 Hz to 200 Hz without deleterious
effect

Power Supply
Effect

<0.005% of URL per volt

Mounting Position
Effect

Zero shift, less than 10 mm H

O for a 10° tilt in any plane.

RFI Effects

With the cover on and/or display in place, in accordance
with IEC 6100-4-3, 80 Hz to 1 Ghz at 10 V/m, 1 GHz to 2.7
GHz at 3 V/m. See Declaration of Conformity for the EMC
Directive

89/336/EEC.

For

full

compliance

with

susceptibility performance, the screen of the cable must be
directly connected to the enclosure via a cable gland that
makes a 360

connection.