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Direct replacements at a fraction of the cost. Interfacing "V" series allows use of any sensor with any meter. Special output ranges and connections are available. |
| pH PREAMPLIFIER CROSS REFERENCE | |||||||||
| Manufacturer | Inst. Model # | TC 25 C | TC +/- | Std TC in Inst Or Preamp | SDI Preamp Auto TC | Preamp Output | # Leads STD/SUB | SDI Solution Ground | SDI Preamp No. |
| Beckman | 940B, BF | 8.7Ω | NTC | Preamp | Yes | + 1 | 5/4 | NO | PHV |
| Beckman | 941 | 8.7KΩ | NTC | Preamp | Yes | + 1 | 5/4 | YES | PHV |
| Beckman | 960 | 8.7KΩ | NTC | Preamp | Yes | + 1 | 5/4 | NO | PHV |
| ECD | RT20, Ut27 | 3KΩ | PTC | Series* | Yes | 14.7uA/pH | 5/4 | NO | EC1 |
| Foxb/Balsbaugh* | 2220 | 2KΩ | PTC | Instrument | Yes | - 1 | 7/4 | NO | V1 |
| Foxboro | 870 | 110Ω | PTC | Instrument | Yes | +1 | 7/4 | NO | V2 |
| Foxboro | 872 | 110Ω | PTC | Instrument | Yes | +1 | 7/4 | NO | V2 |
| Foxboro | 873 | 110Ω | PTC | Instrument | Yes | +1 | 5/4 | NO | V2 |
| Foxboro | 874 | 110Ω | PTC | Instrument | Yes | +1 | 5/4 | NO | V2 |
| Foxboro | E99, 91 | 110Ω | PTC | Instrument | Yes | +1 | 7/4 | NO | V2 |
| Great Lakes | 60 | 300Ω | NTC | Instrument | Yes | +1 | 6/4 | NO | V1 |
| Great Lakes | 70 | 300Ω | NTC | Instrument | Yes | +1 | 6/4 | NO | V1 |
| Great Lakes | 90 | 300Ω | NTC | Instrument | No | +1 | 5/4 | NO | GL90A |
| Great Lakes | 95 | 300Ω | NTC | Instrument | No | +1 | 2/2 | NO | PHMA |
| Great Lakes | 570 | 300Ω | NTC | Instrument | No | +1 | 5/4 | NO | GL90A |
| Great Lakes | All but 670/95 | 300Ω | NTC | Instrument | Yes | +1 | 5/4 | NO | GL90B |
| Great Lakes | 670 | Preamp | Yes | 4-20mA | 2/2 | Option | PHMA | ||
| Great Lakes | 671(*) | 300Ω | NTC | Instrument | No | +1 | 5/4 | NO | GL90A |
| Great Lakes | 672 | 300/1000 | NTC/PTC | Instrument | No | +1 | 5/4 | NO | GL90A |
| Great Lakes | 690 | 300Ω | NTC | Instrument | No | +1 | 5/4 | NO | GL90A |
| L&N | 7073 | 720.5Ω | PTC | Series* | Yes | 71.4ua/pH | 6/4 | NO | V1 |
| L&N | 7075 | 720.5Ω | PTC | Series* | Yes | 71.4ua/pH | 6/4 | NO | V1 |
| L&N | 7076 | 720.5Ω | PTC | Series* | Yes | 71.4uA/pH | 6/4 | NO | V1 |
| L&N | 7079 | 720.5Ω | PTC | Series* | Yes | 71.4uA/pH | 6/4 | NO | V1 |
| L&N | 7081,2,3,4 | 8.5KΩ | NTC | Instrument | Yes | 71.4uA/pH | 6/5 | NO | V1 |
| Lakewood Inst. | 820/830 | 10KΩ | PTC | Preamp | Yes | ±1 or ±10 | 4/4 | NO | LIA |
| Rosemount | 990 | Preamp | Yes | +2 | Option | PHV | |||
| Rosemount | 2081 | 110Ω | PTC | Instrument | No | +1 | 4/5 | NO | U698-03 |
| Robertshaw | 1054, 1054A | 110Ω | PTC | Instrument | No | +1 | 4/4 | NO | U698-03 |
| Rosemount/Beckman | Solu-Comp | 110Ω | PTC | Instrument | No | +1 | NO | U698-03 | |
| Rosemount/Uniloc | 54 | 110Ω | PTC | Instrument | No | +1 | 4/4 | NO | U698-03 |
| Rosemount/Uniloc | 1000, 1,2,3 | 3KΩ | PTC | Instrument | No | +1 | 4/4 | NO | UVA |
| Rosemount/Uniloc | 1050, 1181 | 3KΩ | PTC | Preamp | Yes | +6.03 | 4/4 | NO | U2587 |
| SDI | BPA | 3KΩ | PTC | Preamp | Yes | Volts or mA | 2 or 3 | Option | Boyer AMP |
| SDI | BPA | 3KΩ | PTC | Preamp | Yes | ±1 | 4 | NO | BPA |
| SDI | BPA | 3KΩ | PTC | Preamp | Yes | 4-20mA | 2 | Option | PHMA |
| SDI | BPA | 110Ω | PTC | Preamp | Yes | +1 | 4 | Option | PHP1100 |
| SDI | BPA | 3KΩ | PTC | Preamp | Yes | Adjustable | 3 | Option | PHV |
| Signet | Most Models | Varies | Varies | Yes | -3 or +1 | 6/4 | NO | SSA | |
