Setra 328 Operating Manual

Setra Local Display

Model 328

Installation and Operating Instructions

1.0 INSTALLATION

Setra’s Model 328 is a small, local display designed for installation in high density modular block gas sticks and panels. It can be used with voltage output and current output transducers using 15 Pin and 9 Pin D-Sub connectors. Consult Table 2, the Conﬁgurable Part Number Chart on page 3, to determine the conﬁguration that is supplied. For setting optimum viewing angle, the 328 display housing can rotate 360º degrees. A built-in positive stop limits the rotation of the front portion to a maximum of 360º degrees. If resistance is encountered when trying to rotate in one direction, rotate in the opposite direction.

2.0 ELECTRICAL CONNECTIONS

The 328 can be supplied with either a 15 Pin high-density or 9 Pin D-Sub connector to the input transducer and to the power supply. Conﬁrm the electrical connection supplied, and refer to the appropriate column below for proper connections.

2.1 Voltage Units

2.2 Current Units

9 PIN 15 PIN D-SUB D-SUB CONNECTION PIN PIN + EXCITATION 4 7 + OUTPUT 1 2 – OUTPUT 8 12 – EXCITATION 9 5 CASE GND SHELL SHELL

Reverse Polarity Protected.

9 PIN 15 PIN D-SUB D-SUB CONNECTION PIN PIN + EXCITATION 4 7 – EXCITATION 9 5 CASE GND SHELL SHELL

2.3 EMC Certiﬁcation

This product complies with EMC Directive 2004/108/EC per EN61326-1 Electrical Equipment for Measurement, Control and Laboratory use – EMC Requirements. In order to meet the EMC requirements, the following conditions must be followed during installation:

1. Shielded cable must be used, and the shield must be tied to earth ground (not power supply ground) on at least one end of the cable shield/drain wire. The shield must be maintained all the way from sensor to the power supply.

2. If unshielded cable is used, an earth grounded metal conduit ﬁtting can be used to replace the shielded cable.

3. For a sensor with a metal body or enclosure, the body/enclosure must be grounded to earth. If a protective metal housing is used, the metal housing should be grounded to earth

2.4 RoHS Compliance

The Model 328 complies with the European Union (EU) RoHS Standards for the elimination of hazardous and non-environmentally friendly materials. The product is so marked as to designate its compliance only on its external packaging.

3.0 MECHANICAL INSTALLATIONS

The Model 328, with its rotating front face, requires the use of a locking pin to maintain rigid installation with its mating transducer. This is accomplished by means of a locking pin on the Model 328 display. This locking pin engages with a matching bracket/hole on the interfacing transducer. This locking pin is replaceable should it become damaged during repeated installa-

tion events.

4.0 CALIBRATION

The 328 is factory calibrated to display engineering units. Setra recommends that the zero adjustment be done using the transducer zero potentiometer, whenever possible. The display zero should only be used for minor adjustments. Never adjust the span unless proper calibra-

tion equipment is used and proper calibration procedures are followed.

4.1 Auto Zero & Auto Span Adjustment

The auto zero and auto span adjustment buttons are located on the front of the unit just under the digital display. See Table 1 for details of functionality.

1. AUTO ZERO: Apply zero pressure to the transducer and adjust the 328’s zero if the 328 does not display ZERO reading accurately. Press and Hold the ZERO button and at the same time press and hold the ENTER button for 2 to 3 seconds.

2. AUTO SPAN: Apply full scale pressure to the transducer and adjust the span on the 328. Press and hold the UNITS button, and at the same time press and hold the ENTER button for 2 to 3 seconds. Make sure the display zero is accurate before adjusting auto span.

CAUTION: If you do not press the ENTER button within 5 seconds of pressing the UNITS but-

ton, the displayed units will change. (See section 4.3, page 3)

4.3 Pressure Units Change

The Model 328 is capable of changing the Pressure units by pressing and holding UNITS buttons for 5 seconds An illuminated LED will light under the respective Pressure Unit (e.g., “PSI”, “Bar”, or “KPa”). The unit conversion factors are pre-conﬁgured at the factory. Consult factory for re-

conﬁguration when necessary.

4.4 Overﬂow/Underﬂow

The Model 328 will display an overﬂow or underﬂow condition by means of a visual indication. When in Overﬂow condition, the Model 328 will exhibit an “OUF” on the LED display. When in an Underﬂow condition, the

Model 328 will exhibit an “UDF” on the LED display.

5.0 SPECIFICATIONS

Display Voltage Input

Digits -1999 to 1999 -1999 to 1999

Type 7 Segment LED 7 Segment LED

Polarity Automatic (-) display Automatic (-) display

Long Term Stability ±0.25% Reading ±0.25% Reading

Accuracy 0.10% of reading ±1 count 0.10% of reading ±1 count

Environmental

Operating Temp. +32°F to +140°F (0°C to +60°C) +32°F to +140°F (0°C to +60°C)

Storage Temp. -4°F to +185°F (-20°C to +85°C) -4°F to +185°F (-20°C to +85°C) Temp. Coeff. 100 ppm/C 100 ppm/C

Electrical Data

Current Input

Input Signal 0 to 5 VDC, 0 to 10 VDC 4-20 mA loop powered

Excitation 12 VDC to 30 VDC 6.5 VDC max voltage drop 1 meg ohm min input impedance < 30 mA current consumption

Display Update Rate 25 updates/min. 25 updates/min Protection Reverse polarity protection 100 mA current limit, reverse polarity protection

TABLE 2 CONFIGURABLE PART NUMBER

Example: Part No. 328G

TABLE 1 FACE BUTTON FUNCTION

Key Name Function

ENTER Accept Auto Zero and Auto Span Function

ZERO Auto Zero (section 4.1 above)

UNITS Auto Span (see section: 4.1 above) and Units Change ( see section 4.3 page 3)

4.2 Decimal Points

The 328 decimal point is factory set and will self-adjust when changing measuring units.

2 3

Model

328G = 328

Input

M = 0-5 VDC L = 0-10 VDC

B = 4-20 mA

Note: The character “Z” is used to identify customer speciﬁc options in all ﬁelds. (Consult Factory)

1 = 25.0

2 = 50.0 3 = 100.0 4 = 250 5 = 500 6 = 1000 7 = 3.00Kpsi 8 = 10.0 9 = 20.0

Pressure Range

Bar Range

PSI Range

A B = 3.40 C = 7.00 D = 17.0 E = 34.0 F = 70.0 G = 210 H = 200 J = 35.0 L = 1000

= 1.70

Pressure

G = Gage C = Compound

A = Absolute

Torr

Transducer Conn.

D = 15 pin Female D-sub, Rear E = 9 Pin Female D-Sub, Rear

D = 15 Pin Male D-Sub, Bottom

E = 9 Pin Male D-Sub, Bottom

System Conn.

Options

NS = Switchable

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