Replacement integral contact pin and retainer for current-generation Delmhorst meters
A non-insulated steel pin mounted in its retainer, giving 5/16 inch (7.9 mm) penetration. These are the pins that sit on top of the meter itself, not on a separate electrode.
Fitment
- Delmhorst BDX-20 and BDX-30
- Delmhorst JX-20 and JX-30
- Delmhorst PX-20 and PX-30
- Current Navigator series meters with integral pins
- Optional on the 2-E electrode and the 4-E electrode
Important — this is the pin that lets the cap close
Delmhorst specifies the 2498/A-100 for these meters so the pin cover fits correctly. The older 2497/A-100 pin, supplied on earlier BD-series meters, will read accurately if fitted, but the pin cover will not close over it. The BDX-20 and BDX-30 owner’s manual states this directly. If you have a BDX, JX or PX meter, order this part rather than the 2497.
Specifications
| Part number | 2498/A-100 |
|---|---|
| Pin type | Non-insulated steel, supplied in retainer |
| Penetration | 5/16 inch (7.9 mm) |
| Materials | Wood, concrete and gypsum. Delmhorst rates the pin for wood up to 2 inches thick, plaster and drywall; our earlier listing quoted 1 1/2 inches for wood, concrete and gypsum. Both figures are guidance — penetration is fixed at 5/16 inch. |
| Sold as | Each |
When to replace
Pins blunt and corrode with use, and a blunt pin gives a poor contact and an optimistic reading. Change them as soon as the tips no longer bite cleanly, and keep the retainers hand tight — Delmhorst specifically warns against over-tightening.
Frequently asked questions
Will the older 2497 pins work in my BDX?
Electrically, yes. Both are non-insulated steel pins with 5/16 inch penetration. The pin cover will not fit over them, which is why Delmhorst specifies the 2498 for these meters.
Do these fit the 2-E electrode?
They can be used on the 2-E and 4-E, but the standard pin for those electrodes is the 2497/A-100.
How deep do they read?
Penetration is 5/16 inch (7.9 mm), which suits wood up to about 2 inches thick, plaster and drywall. For deeper readings you need an external electrode such as the 26-ES hammer electrode.
Can I sharpen a blunt pin instead of replacing it?
You can dress a tip, but the pin is a consumable and grinding changes the exposed geometry. For the cost of a pin it is not worth risking the reading.
Not sure which part suits your meter? Tell us the model and what you are testing and we will confirm the right one before you order.
