Custom Design
Our catalog products offer a great deal of design flexibility, but they cannot satisfy every need. We've been designing custom products for many years, and can provide application and design assistance, as well as guidance based on our experience. Give us a call or send a sketch or description of your requirement.

Calibration
We maintain the equipment to provide both routine and custom measurement of our products. Measurements are traceable to the NIST and we can perform measurements at -196°C, 0°C, 100°C, and at any temperature between 30 and 420°C. Data accuracy is ± 0.05°C between 0 and 125°C, and ± 0.1°C outside this range. All measurements are on the ITS-90.

Routine Measurements
We test 4100 model probes containing platinum sensors at 0°C and 100°C, and provide this resistance data to two decimal digits on tags which are attached to each probe. Although we test 4100 model probes which contain thermistors, we do not usually provide this data, nor do we provide test data, except for custom measurements, for 41000 series probes.

Custom Measurements
We can provide measurements for probes which contain either platinum or thermistor sensors.This data can be used to create resistance vs. temperature print-outs. Printouts for platinum sensors can be in either ITS-90 or Callendar-Van Dusen format, and include the appropriate coefficients and average sensitivity at printout intervals to aid interpolation. Minimum resolution is .01° . Printouts for thermistor sensors use the Steinhart and Hart equation, are limited to 100°C maximum span, and minimum resolution is .1°C. We can also measure and provide printouts for various thermocouple sensors over the same ranges.

Printouts for platinum sensors require two to four measurements, depending on the temperature span and format. Printouts for thermistor sensors require three measurements, and printouts for thermocouples require two or three measurements.

Ordering
You can order directly from Logan Enterprises, Inc., or, in some cases, from representatives or distributors. Orders can be telephoned, faxed, mailed, or e-mailed to us. Because of the complexity of catalog part numbers, we may request a written purchase order.

We try to maintain a consistent approach to order entry to reduce errors and duplication of part numbers in our system. You must follow the indicated format for the required portions of each part number. If you use your own part numbers for catalog products, you must also indicate the correct Logan Enterprises part numbers.

You can establish an open account by forwarding the appropriate bank and trade references, or you can purchase COD if your business is in the US . We  accept major credit cards. Prices are quoted FOB West Liberty OH . Our payment terms are net 30 days and our minimum billing is $50.00 US. 

Warranty
Most of our products are date-coded. We warrant all products to be free of manufacturing defects and to perform within published or stated specifications for a period of two years from date of manufacture. The warranty is limited to replacement or repair of a defective product, at our discretion.