Micromod MOD: MODCELL Multiloop Processor 2002N Model C and Manuel d'utilisateur télécharger pdf (Page 43)

MODCELL Multiloop Processor

ELECTRICAL CONNECTIONS

3.5.6 2009A RTD Input (RIM, WRIM)

Make resistance input connections to terminal block as shown in Figure 3-8. The 2 wire

input module (RIM) uses a single wide case and the 3 wire input module (WRIM) uses a

double wide case. Table 3-2 summarizes the RTD support standards and shows some

sample RTDs.

Table 3-2. Supported RTD Materials and Standards and Sample RTDs

1. Also meets IEC 751 and BS 1904 Standards.

2. Sometimes called U.S. Industrial Standard.

Sample RTDs and Appropriate Module

ohms

@ 0°C

Approx. ohm

Range

RTD Module

Supported RTD Materials and Standards

Material

Alpha

(ohm/ohm/°C)

Standard

1000 184.94 to 3902.61 2 Wire Platinum 0.003850 DIN 43760 (Note 1)

500 92.47 to 1951.31 2 Wire Platinum 0.003850 DIN 43760 (Note 1)

1000 555.00 to 3169.25 2 Wire Nickel 0.006720 Minco (Note 2)

100 18.49 to 390.26 3 Wire Platinum 0.003850 DIN 43760 (Note 1)

98.129 16.66 to 311.87 3 Wire Platinum 0.003923 SAMA RC21-4

100 17.07 to 332.62 3 Wire Platinum 0.003902 Burns

100 17.26 to 403.70 3 Wire Platinum 0.003911 Minco (Note 2)

120 66.60 to 380.31 3 Wire Nickel 0.006720 Minco (Note 2)

Input specifications for the 2 wire and the 3 wire input modules are:

RTD INPUT

Range (0 t o100%):

2 Wire: 0 to 4000 Ohms

3 Wire: 0 to 400 Ohms

Low limit: 0 Ohms

High limit:

2 Wire: 4200 Ohms

3 Wire: 400 Ohms

Module Counts (0 to 100%): –25000 to 25000 (converted to 0 to 50000 in controller)

Sensitivity (One Count)

2 Wire: 0.08 Ohms

3 Wire: 0.008 Ohms

Accuracy, calibrated at 5V supply and 25°C: ±0.05% of Range

(This equals an absolute accuracy of ±25 counts or ±2 ohms for the 2 wire input or

±0.2 ohms for the 3 wire input or ±0.519°C for the Platinum DIN 43760 curve)

Temperature Effect (0 deg C to 50 deg C): 0.1% of Range

Noise filter: 3 db at 5 Hz

Max Resistance Each Lead: 100 Ohms

Excitation Current (maximum)

2 Wire: 0.25 mA

3 Wire: 0.6 mA

Burnout Detection on all leads: Upscale

Isolation: 250 Vrms

Common mode rejection: 100 db at 60 Hz minimum

Normal mode rejection: 40 db at 60 Hz minimum

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 81 82

Commentaires sur ces manuels

Pas de commentaire

Micromod MOD: MODCELL Multiloop Processor 2002N Model C and Manuel d'utilisateur Page 43

Commentaires sur ces manuels

Produits connexes et manuels pour Équipement Micromod MOD: MODCELL Multiloop Processor 2002N Model C and