Type 2390 and 2390B Table 1. Specifications (continued)
Operating Limits Process Temperature: See table 3 and figure 11 Ambient Temperature and Humidity: See below
Transport and Storage Limits(1) – 40 to 176"F – 58 to 176"F (– 40 to 80"C) (– 50 to 80"C) Normal Limits(1)
Conditions Ambient Temperature(1) Ambient Relative Humidity
10 to 95%
Nominal Reference(1) 77"F (25"C)
10 to 95%
40%
1. These terms are defined in ISA Standard S51.1-1979. 2. Specific gravity of 1.0 on standard wall torque tube with full input change. 3. All versions have reverse polarity protection.
Table 2. Additional Tools Required TOOL
TOOL SIZE FOR TYPE 2390 OR 2390B TRANSMITTER Type 2390, Inches Type 2390B, mm
COMPONENT
Hex nut driver Allen head wrench Open-end wrench Allen head wrench
Shaft clamp Shipping screw Cam disk assembly Heat insulator
11/32 9/64 9/32 5/64
7 3 7 2
Open-end wrench Open-end wrench Open-end wrench Allen head wrench Allen head wrench Allen head wrench Allen head wrench
Mounting hex nuts Vent plug Eccentric pin Flexure screws Lever assembly adjustment Eccentric pin lock Cover, CENELEC flameproof
1/2 15/16 3/16 3/32 9/64 5/64 5/64
13 24 5 2.5 3 2 2
Table 3. Allowable Process Temperatures for Common 249 Sensor Component Materials Process Temperature Min.
1450
Max.
Cast Iron
!20"F (!29"C)
450"F (232"C)
Steel
!20"F (!29"C)
800"F (427"C)
Stainless Steel
!325"F (!198"C)
800"F (427"C)
N05500 (K-Monel)
!325"F (!198"C)
700"F (371"C)
Graphite Laminate/SST Gaskets
!325"F (!198"C)
800"F (427"C)
Monel/PTFE Gaskets
!100"F (!73"C)
400"F (204"C)
LOAD RESISTANCE, OHMS
Material
FOR A 4!20 MILLIAMPERE CIRCUIT, MAXIMUM ALLOWABLE LOAD RESISTANCE IS 1700 OHMS
1700
1250 1000
750
CSA CERTIFIED OR FM APPROVED TRANSMITTERS INTRINSICALLYSAFE AND FLAME-PROOF
500 250
Test Equipment and Tools Required
0 10 11
! Power supply capable of supplying up to 24 volts dc in series with a load. ! A 4-digit digital voltmeter (DVM), with an impedance of at least 250,000 ohms, that measures voltages in the range of 0 to 10 volts dc with an accuracy of !1 millivolt, and currents in the range of 0 to 50 mA dc with an accuracy of !0.01 mA.
4
20
25
30
35 32.5
POWER SUPPLY VOLTAGE, V dc A3542-2 / IL
The following equipment is required for installation, calibration, and maintenance of the Type 2390 and 2390B liquid level transmitters.
15
40
STANDARD AND LCIE (CENELEC) FLAME-PROOF 45 TRANSMITTERS PTB (CENELEC) INTRINSICALLY-SAFE APPROVED TRANSMITTERS
Figure 3. Power Supply Requirements and Load Resistance
! Optionally, a 250 ohm, !0.1 percent, 1/2-watt resistor may be used for converting the 4!20 mA transmitter signals to 1–5 volts dc for voltage measurements. ! General-purpose multimeter with an input impedance greater than 30,000 ohms per volt. ! An alignment tool (part number 1N10323 G012).